Conference paper
Star tracker and vision systems performance in a high radiation environment
A part of the payload of the second Ariane 5 prototype vehicle to be launched by Arianespace, was a small technology demonstration satellite. On October 30th, 1997, this test satellite, dubbed Teamsat, was launched into Geostationary Transfer Orbit and would as such pass the Van Allen radiation belts twice per orbit.
One of the experiments onboard Teamsat was the so-called Autonomous Vision System (AVS). The AVS instrument is a fully autonomous star tracker with several advanced features for non-stellar object detection and tracking, real-time image compression and transmission. The objectives for the AVS in Teamsat were to test these functions, to validate their autonomous operation in space, and to assess the operational constraints of a high radiation environment on such processes.
This paper describes the AVS experiment, and the radiation flux experienced onboard TEAMSAT. This overview is followed by examples of the radiation impact on the AVS instrument flown onboard the TEAMSAT, and finally the operations of the various countermeasures are discussed.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 1999 |
| Pages: | 95,96,97,98,99,100,101,102,103 |
| Proceedings: | 1999 IEEE Aerospace Conference |
| ISBN: | 0780354257 and 9780780354258 |
| Types: | Conference paper |
| DOI: | 10.1109/AERO.1999.793149 |
| ORCIDs: | Jørgensen, John Leif |
AVS experiment AVS instrument Ariane 5 prototype vehicle Arianespace Autonomous Vision System Belts CCD image sensors Geostationary Transfer Orbit Instruments Intelligent vehicles Machine vision Object detection Payloads Prototypes Satellites System performance Teamsat Testing Van Allen radiation belts aerospace instrumentation artificial satellites astronomy computing autonomous star tracker data compression demonstration satellite image coding non-stellar object detection object detection radiation belts radiation environment radiation flux radiation hardening (electronics) radiation impact radiation protection real-time image compression tracking
